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Carbon Dioxide and the Photosynthesis of Field Crops. A Tracer Examination of Turbulent Transfer Theory 1
Author(s) -
Harper L. A.,
Box J. E.,
Baker D. N.,
Hesketh J. D.
Publication year - 1973
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1973.00021962006500040015x
Subject(s) - carbon dioxide , flux (metallurgy) , environmental science , eddy covariance , tracer , agronomy , photosynthesis , turbulence , atmospheric sciences , chemistry , physics , botany , meteorology , biology , ecology , ecosystem , organic chemistry , nuclear physics
Carbon dioxide was released at ground level in a cotton ( Gossypium hirsutum L.) field, and the flux above the crop was measured. The aerodynamic and energy balance methods of calculating carbon dioxide flux underestimated the measured flux by approximately the same amounts. There was considerable variability in the difference between measured and calculated fluxes, and little correlation with meteorological parameters could be found. Differences between measured and calculated fluxes were slightly less with wind orientation across the rows than with orientation parallel to the rows.